We are experts in all things geotechnical to make ground good, which include diverse applications that typically cover civil and geotechnical engineering applications including roads, airfields, railroads, embankments, retaining structures, reservoirs, canals, dams, landfills, bank protection, coastal engineering, car parks, landfill and sustainable urban drainage systems.

Ground Reinforcement & Separation

Ground reinforcement typically consists of a reinforcing element placed on the sub-grade in order to increase accessibility and stability of the ground. The reinforcing element, usually Geotextiles or Geogrids, is also used extensively beneath working platforms and piling areas. They reinforce very soft grounds for haul roads for windfarm access etc. The surface may be paved or unpaved or finished with soft landscaping or grass paving.

Separation applications are typically where a woven or non-woven geotextile is used to act as a separator to prevent the sub-base and sub-grade intermixing and creating soft patches.

We help by providing design led expertise, advise and solutions to prevent this happening thereby saving the client and the contractor valuable resources.

  • Asphalt reinforcement for highways and roads
  • Haul roads for wind farm construction
  • Soil stabilisation
  • Ground stabilisation
  • Basal reinforcement
  • Roadway sub-base reinforcement
  • Steep slope stabilisation
  • Reinforcement for retail parks, car parks and access roads

Erosion Control

Erosion is an issue which can affect many projects and is a significant area of concern on most construction sites. With the UK’s differing weather patterns, erosion is a threat not only to the environment, but can pollute surrounding rivers and bodies of water, putting both wildlife and human health at risk.  It can damage and contaminate watercourses quickly and cause contamination often significant distances from the point of where the event occurred.

We help by providing design led expertise, advice and solutions to prevent this happening thereby saving the client and the contractor valuable resources.

  • Revegetation of slopes and embankments
  • Protection of vulnerable ground
  • Minimising silt formation/run off

Contaminated Ground, Waste & Landfill

With changes to government policy in 2020 that now allows for fast-track planning for brownfield sites, many developers are faced with potentially prohibitive costs of remediating contaminated land. Before construction and landscaping projects can begin contaminated ground is an issue that must be addressed in line with local authority standards and in accordance with the Environmental Protection Act 1990.

Through the clever use of our consultancy services and geotextile products developers are able to better separate and manage contaminated ground that allows safe and permitted developments to take place.

Working with our partners and contractors, we provide services from a preliminary contamination risk assessment to land quality characterisation and remediation of large industrial areas. We oversee the site assessment and investigations to BS5930:2015 and EA Guiding Principals for Land Contamination (GPLC 2010) prior to specifying solutions. These consultancy services ensure the site is compliant and most importantly safe for both wildlife and human health.

  • Indicator Geotextiles
  • Containment of Contaminated Ground

Highways & Rail

The upgrading of our transport network and remedial works on our busy roads creates many opportunities where the ground needs improving from reinforcing and preventing erosion on embankments through to Suds applications on new highways where drainage ditches need assistance in establishment of vegetation.

Rail applications are often demanding and time sensitive with track-bed construction applications typically cover separation to prevent the sub-base and sub-grade intermixing, filtration and drainage management. We can source and supply fully approved products when required.

  • Soil stabilisation
  • Reinforced soil slopes
  • Erosion control on embankments and acoustic bunds

Embankment / Slope Stabilisation

Embankments are an essential part of many developments, providing form, function, protection, and landscaping.  To deliver this, embankment stabilisation is essential – reinforcing the resistance and stability of soils to preserve the integrity of a slope or embankment, especially around watercourses and drainage channels.

Without stabilising the slope and controlling erosion, developments for new residential areas, roads and railways or reservoirs and dams, are vulnerable to erosion from surface water runoff, especially in the early stages until vegetation is firmly established.

  • Railway embankments
  • Road and motorway embankments
  • Residential developments

Geotechnical Engineering

Geotechnical Engineering is a branch of civil engineering that relates to the analysis, design, and construction of foundations, retaining structures and groundworks.

It centres around the physical, mechanical, and chemical properties of both soil and rock and involves assessing field data, engineering ways to stabilise foundations and slopes, and designing foundations. It also covers overseeing work on a construction site.

Geotechnical Engineering covers a range of applications including foundations, slopes, retaining structures, embankments, tunnels, levees, wharves, and landfills.

  • Stabilisation of ground
  • Ground reinforcement
  • Separation

Tree Root Protection

Trees are often overlooked during development and, as a result, many are given inadequate protection, that can result in their demise within a few years.  The part of the tree most susceptible to damage is typically the root system because roots cannot be seen and their extent is not realised and usually there is a lack of understanding of root function and their importance for the health of the tree. 

In construction activities, it is important to avoid the compaction of the soil as this results in reduced oxygen content within the soil and long term damage for the tree roots.

The affects of damage can be serious, but often it takes several years for this to become evident and is not always linked back to the actual cause during development work. Often, by the time the damage becomes evident, the developer may no longer own the site, leaving the new owner with the problem and the potential need for costly tree work. Lack of protection can also result in damage to bark and branches that can disfigure a tree and result in disease and decay that also reduces safe life expectancy.

Tree Preservation Orders (TPO) are orders made by a local planning authority which in general make it an offence to wilfully damage or wilfully destroy a tree without the planning authority’s permission.  If a developer is considering a site where there are significant trees, then an early consultation is advised where we can often offer advice as to what approach a local planning authority might take in relation to protected trees on site.

  • Poisoning of roots from spillage, or storage of chemicals (typically oil and fuel on development/construction sites) and any other potentially noxious materials
  • Damage to roots by vehicles / plant equipment and / or storage of building materials
  • Cutting and removal of roots by excavation

Silt Control

Sediment is the biggest pollutant generated on construction sites so measures to effectively manage it are essential. Anyone operating a construction site is responsible for making sure silt, sediment and erosion problems are minimized in order to negate the environmental impact of any project. The Environment Agency (EA), The Scottish Environment Protection Agency (SEPA), The Northern Ireland Environment Agency (NIEA) and The Environment Agency Wales are each responsible for ensuring compliance and investigating breaches in their country. They also have powers to impose heavy fines for non-conformance.

Silt control and erosion control will prevent sediment – soil, silt, sand, mud or clay disturbed by construction works or weather – getting into nearby waterways and impacting the environment. It is the responsibility of anyone operating a construction site to ensure effective control measures are in place to reduce environmental impact.

  • Silt fence – trenched into the ground to divert or filter surface water runoff
  • Silt curtain – placed in water to control, block or absorb sediment which reaches waterways
  • Sediment mat – placed in traps or ditches to catch sediment as it drops out of suspension in water

Suds Ponds & Water Storage

It is now a requirement for Land Developers to provide a suitable water run off system that can reduce the risk of flooding that’s associated with traditional drainage systems.

Sustainable Urban Drainage Systems (SUDS) attempt to mimic nature and often require multiple installations of Geotextiles and Geomembranes alongside the installation of vegetation to help retain and slow surface water run-off.

They are often regarded as a sequence of management practices, principles, control structures and strategies. SUDS provide areas to store water in natural contours and can be used to allow water to soak into the ground or sustainably drain away.

SUDS are more sustainable than traditional site drainage methods because they:

  • Manage runoff volumes and flow rates from hard surfaces, reducing the impact of urbanisation on flooding
  • Provide opportunities for using runoff where it falls
  • Protect or enhance water quality (reducing pollution from runoff)
  • Protect natural flow regimes in watercourses
  • Are sympathetic to the environment and the needs of the local community
  • Provide an attractive habitat for wildlife in urban watercourse

Whilst legislation is non-statutory there are technical standards that have been produced by Defra for England and the Welsh Government for Wales with an expectation that SUDS will be designed and constructed in accordance with these standards.  The details of these can be found here:

English non-statutory SuDS technical standards 

Defra, 2015

Standards for the design, maintenance and operation of SuDS.

Non-Statutory Technical Standards for Sustainable Drainage: Practice Guidance

LASOO, 2016

Guidance on the English non-statutory SuDS technical standards produced by the LASOO advisory group.

Recommended non-statutory standards for sustainable drainage in Wales

Welsh Government, 2016
Standards and guidance for SuDS serving new developments

  • Flood risk inside and outside the development
  • Peak and volume control
  • Structural integrity
  • Designing for maintenance considerations

Sea / Flood Defences

Flooding is a having a major impact on towns and villages and is a high priority for local councils and government bodies as the impact is costing millions for our economy. As a planning applicant, you will likely need to carry out a flood risk assessment for most developments and particularly those within one of the flood zones. The assessment may include items like a flood map, risk map, modelling and hydrology reports and guidelines as well as calibrated and verified model input data and a flood defence breach hazard map to cover things like flood depth, velocity and maximum flood hazard.

Coastal change management typically covers areas that are likely to be affected by coastal change (physical change to the shoreline through erosion, coastal landslip, permanent inundation or coastal accretion), primarily due to climate change.

Geotextiles for coastal defence need to be designed to consistently withstand the wave action pounding the rock armouring.

We can help with consulting, advising and supplying products from sandbags and bulk bags through to heavy duty geotextile for construction works under heavy duty revetments and remediation works.

  • Flood risk inside and outside the development
  • Peak and volume control
  • Structural integrity
  • Designing for maintenance considerations
  • Embankment stabilisation
  • Silt Control

Watercourse Remediation

Watercourse remediation involves the restructuring and improvement in the layout of fast-flowing or dangerous waterways.

Rivers, streams, canals, and other bodies of water with large volumes of water moving at a high velocity can cause serious problems for wildlife, the environment and building structures. Embankments of canals and rivers can erode and wash away due to these high levels of fast water and cause flooding, silt formation and significant damage to bridges and walls.

When a watercourse has a straight path it can reach high speeds and be extremely destructive and can be made worse after heavy rainfall. Measures can be employed such as partial manmade barriers to change the direction of water and slow down its velocity.

Once the remediation has taken place, natural growth of vegetation and introduction of wildlife can be introduced.

  • Reinforcement of embankments
  • Divert watercourses for developments
  • Flood risk minimisation
  • Environmental protection

Providing erosion solutions

Stratec are independent experts in Geotechnical products and applications for the physical and naturally built environments.

What our customers say

“The help and support I received was second to none…”

…with a large product range they were able to advise on materials to best fit my requirements … and get them to our remote site quickly”.

Seamus Farrell – Bam

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